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Finding the Fourth Proportional to 3,720.70, 5,130.03 and 3,277.90

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Solution

The fourth proportional to 3,720.70, 5,130.03 and 3,277.90 is: 4,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.70 : 5,130.03 = 3,277.90 : x
  2. Step 2: Convert to fraction form
    3,720.70/5,130.03 = 3,277.90/x
  3. Step 3: Cross multiply
    3,720.70x = 5,130.03 × 3,277.90
  4. Step 4: Simplify right side
    3,720.70x = 16,815,725.34
  5. Step 5: Solve for x
    x = 16,815,725.34/3,720.70
  6. Step 6: Final answer
    x = 4,519.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.